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Zatikyan AL, Markarian SA. FTIR ATR SPECTRAL AND THEORETICAL VIBRATIONAL STUDIES OF URACIL IN DIMETHYLSULFOXIDE OR DIETHYLSULFOXIDE SOLUTIONS. J STRUCT CHEM+ 2022. [DOI: 10.1134/s0022476622030064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2
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Zhao Q, Xie R, Zeng Y, Li W, Xiao G, Li Y, Chen G. Palladium-catalyzed C–H olefination of uridine, deoxyuridine, uridine monophosphate and uridine analogues. RSC Adv 2022; 12:24930-24934. [PMID: 36199883 PMCID: PMC9434382 DOI: 10.1039/d2ra03681a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/25/2022] [Indexed: 11/21/2022] Open
Abstract
The palladium-catalyzed oxidative C–H olefinations of uridine, deoxyuridine, uridine monophosphate and uridine analogues are reported herein. This protocol provides an efficient, atom-economic and environmentally friendly approach to the synthesis of biologically important C5-alkene modified uracil/uridine-containing derivatives and pharmaceutical candidates. The palladium-catalyzed oxidative C–H olefinations of uridine, deoxyuridine, uridine monophosphate and uridine analogues are reported herein.![]()
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Affiliation(s)
- Qin Zhao
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Ruoqian Xie
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Yuxiao Zeng
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Wanlu Li
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China
| | - Guolan Xiao
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Yangyan Li
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, People's Republic of China
| | - Gang Chen
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
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Halogenation and nitration of 1-carboxymethyl-5-methyluracil. Halophilic reaction involving acetic anhydride. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-3015-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Mohamed AH. An Efficient Approach for the Synthesis of 1,2,3‐Triazole Moiety to Generate Uracil Molecular Architectures Through Cu‐Catalyzed Azide–Alkyne Cycloaddition. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Asmaa H. Mohamed
- Chemistry Department, Faculty of ScienceMinia University El‐Minia Egypt
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Mohamed AH, Shaker RM. An Efficient Method for the Synthesis of N‐uracil‐4‐oxo‐thiazolidines without Catalyst. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Asmaa H. Mohamed
- Chemistry Department, Faculty of ScienceMinia University El‐Minia Egypt
| | - Raafat M. Shaker
- Chemistry Department, Faculty of ScienceMinia University El‐Minia Egypt
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Colasurdo DD, Pila MN, Iglesias DA, Laurella SL, Ruiz DL. Tautomerism of uracil and related compounds: A mass spectrometry study. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2018; 24:214-224. [PMID: 29232994 DOI: 10.1177/1469066717712461] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
It has been demonstrated that uracil has a preponderant tautomeric form, but it is also known that different tautomers co-exist in this equilibrium. In this work, mass spectrometry is used as a helpful tool to analyse the equilibria, using derivative compounds to forbid the presence of some tautomers and ion trap mass spectrometry to follow relevant fragmentation pathways. Theoretical calculations were performed to confirm tautomers abundance by energy minimization in gas phase. Analysis of mass spectra of uracil, three methyl-substituted uracils, 2-thiouracil and three benzouracils suggest that uracil exists mainly as three tautomers in gas phase: one major structure that corresponds to the classical structure of uracil (pyrimidine-2,4(1H,3H)-dione) bearing two carbonyls and two NH moieties, and two minor enolic forms (4-hydroxypyrimidin-2(1H)-one and 2-hydroxypyrimidin-4(1H)-one). Such tautomeric distribution is supported by theoretical calculations, which show that they are the three most stable tautomers.
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Affiliation(s)
- Diego D Colasurdo
- 1 Facultad de Ciencias Exactas, CEDECOR, Departamento de Química, CONICET, Universidad Nacional de La Plata, La Plata, Argentina
| | - Matías N Pila
- 1 Facultad de Ciencias Exactas, CEDECOR, Departamento de Química, CONICET, Universidad Nacional de La Plata, La Plata, Argentina
| | - Dacio A Iglesias
- 1 Facultad de Ciencias Exactas, CEDECOR, Departamento de Química, CONICET, Universidad Nacional de La Plata, La Plata, Argentina
| | - Sergio L Laurella
- 2 Facultad de Ciencias Exactas, CEDECOR, Departamento de Química, CIC, Universidad Nacional de La Plata, La Plata, Argentina
| | - Danila L Ruiz
- 1 Facultad de Ciencias Exactas, CEDECOR, Departamento de Química, CONICET, Universidad Nacional de La Plata, La Plata, Argentina
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Kise N, Hamada Y, Sakurai T. Electroreductive Intermolecular Coupling of Uracils with Aromatic Ketones: Synthesis of 6-Substituted and cis-5,6-Disubstituted 5,6-Dihydro-1,3-dimethyluracils and Their Transformation to 6-Substituted 1,3-Dimethyluracils, trans-5,6-Disubstituted 5,6-Dihydro-1,3-dimethyluracils, and 4,5,5-Trisubstituted 3-Methyloxazolizin-2-ones. J Org Chem 2016; 81:5101-19. [PMID: 27172090 DOI: 10.1021/acs.joc.6b00670] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The electroreductive coupling of 1,3-dimethyluracil, thymine, and 5-fluorouracil with aromatic ketones in the presence of TMSCl gave 6-substituted and cis-5,6-disubstituted 5,6-dihydro-1,3-dimethyluracils. The dehydrotrimethylsiloxylation of the adducts afforded 6-substituted and 5,6-fused 1,3-dimethyluracils. The detrimethylsilylation of the adducts with TBAF or 1 M HCl-MeOH gave 4,5,5-trisubstituted 3-methyloxazolizin-2-ones or 3-methyloxazolizin-2-imines in addition to simply desilylated alcohols. The cis-5,6-disubstituted 5,6-dihydro-1,3-dimethyluracils were isomerized to the corresponding trans-isomers by heating in the presence of cat. DMAP. The cis- and trans-5,6-disubstituted 5,6-dihydro-1,3-dimethyluracils were assigned by the coupling constants J5,6 of their (1)H NMR spectra.
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Affiliation(s)
- Naoki Kise
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University , 4-101, Koyama-cho Minami, Tottori 680-8552, Japan
| | - Yusuke Hamada
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University , 4-101, Koyama-cho Minami, Tottori 680-8552, Japan
| | - Toshihiko Sakurai
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University , 4-101, Koyama-cho Minami, Tottori 680-8552, Japan
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Kise N, Tuji T, Sakurai T. Stereoselective intramolecular coupling of barbituric acids with aliphatic ketones and O-methyl oximes by electroreduction: radical cyclization mechanism supported by DFT study. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Yavolovskii AA, Ivanov YE, Fonari MS, Croitor L, Grishchuk LV, Ivanova RY, Kamalov GL. Reaction of 6-Methyl-2-Thiouracil and 6-Phenyl-2-Thiouracil with Chloro-β-Dicarbonyl and Bromo-β-Dicarbonyl Compounds and Their Nitrile Analogs. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2525] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- A. A. Yavolovskii
- National Academy of Sciences of Ukraine; A. V. Bogatsky Physico-Chemical Institute; Lyustdorfskaya doroga 86 Odessa 65080 Ukraine
| | - Yu. E. Ivanov
- National Academy of Sciences of Ukraine; A. V. Bogatsky Physico-Chemical Institute; Lyustdorfskaya doroga 86 Odessa 65080 Ukraine
| | - M. S. Fonari
- Institute of Applied Physics; Academy of Sciences of Moldova; Academy str. 5 Chisinau MD2028 Moldova
| | - L. Croitor
- Institute of Applied Physics; Academy of Sciences of Moldova; Academy str. 5 Chisinau MD2028 Moldova
| | - L. V. Grishchuk
- National Academy of Sciences of Ukraine; A. V. Bogatsky Physico-Chemical Institute; Lyustdorfskaya doroga 86 Odessa 65080 Ukraine
| | - R. Yu. Ivanova
- Odessa National Maritime University; Mechnykova Str. 34 Odessa 65029 Ukraine
| | - G. L. Kamalov
- National Academy of Sciences of Ukraine; A. V. Bogatsky Physico-Chemical Institute; Lyustdorfskaya doroga 86 Odessa 65080 Ukraine
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Zhang J, Pidlypnyi N, Nieger M, Namyslo JC, Schmidt A. Zwitterionic borane adducts of N-heterocyclic carbenes from mesomeric betaines of uracil. Org Biomol Chem 2014; 12:2737-44. [PMID: 24658502 DOI: 10.1039/c3ob42462f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Imidazolium-substituted uracil-anions are in equilibrium with their N-heterocyclic carbenes which can be trapped as cyclic borane adducts.
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Affiliation(s)
- Jiaxi Zhang
- Clausthal University of Technology
- Institute of Organic Chemistry
- D-38678 Clausthal-Zellerfeld, Germany
| | - Nazar Pidlypnyi
- Clausthal University of Technology
- Institute of Organic Chemistry
- D-38678 Clausthal-Zellerfeld, Germany
| | - Martin Nieger
- Laboratory of Inorganic Chemistry
- Department of Chemistry
- University of Helsinki
- , Finland
| | - Jan C. Namyslo
- Clausthal University of Technology
- Institute of Organic Chemistry
- D-38678 Clausthal-Zellerfeld, Germany
| | - Andreas Schmidt
- Clausthal University of Technology
- Institute of Organic Chemistry
- D-38678 Clausthal-Zellerfeld, Germany
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